RF Safe

Effect of 50 Hz sinusoidal electromagnetic field on the kinetics of 14CO2 exhalation after [14C]-N-nitrosodiethylamine administration in mice.

Bioelectromagnetics · 1999 · Benefit · Low evidence

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BenefitLow evidencePaper 5375

Mice exposed to a 50 Hz, 2 mT (rms) electromagnetic field (8 h/day) showed a significant increase in conversion of [14C]-NDEA to exhaled 14CO2 at 6 and 8 weeks of exposure (reported as 26.9% and 37.4%, respectively, vs 22.8% within 1 h after administration). …

Study snapshot

PublicationBioelectromagnetics · 1999
Study typeanimal
Reported directionBenefit
Evidence ratingLow

Abstract

N-Nitrosodiethylamine (NDEA) has been identified as a typical environmental carcinogen. Its metabolism was studied in mice under the influence of an electromagnetic field (EMF). After intraperitoneal administration of [14C]-NDEA, 0.2 microCi/100 g body weight resulted in 22.8% of the total radioactivity exhaled as 14CO2 within 1 h. Mice were exposed to a 50 Hz, 2 mT (rms) electromagnetic field, 8 h/day for 8 weeks. There was a significant increase in the metabolic turnover of [14C]-NDEA into 14CO2 at the end of both 6 and 8 weeks of field exposure, i.e., 26.9% and 37.4% respectively. The enhanced capacity of mice to metabolize NDEA after the exposure to EMF may result in animals with a smaller amount of the bioactive carcinogen burden, thereby indicating a protective role of 2 mT EMF in a whole animal study.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeanimal
Effect directionbenefit
PopulationMice
Sample sizeNot supplied
ExposureELF · 8 h/day for 8 weeks
Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Mice exposed to a 50 Hz, 2 mT (rms) electromagnetic field (8 h/day) showed a significant increase in conversion of [14C]-NDEA to exhaled 14CO2 at 6 and 8 weeks of exposure (reported as 26.9% and 37.4%, respectively, vs 22.8% within 1 h after administration). The authors interpret the increased metabolism as potentially reducing the bioactive carcinogen burden.

Outcomes measured

  • Metabolic turnover of [14C]-N-nitrosodiethylamine (NDEA) into 14CO2 (percent of total radioactivity exhaled within 1 h)

Limitations

  • Sample size not reported in the abstract.
  • Details of control/sham exposure conditions are not described in the abstract.
  • Only a metabolic biomarker outcome is reported; no direct cancer or health endpoints are provided in the abstract.
  • Statistical methods and variability measures are not provided in the abstract.
View raw extracted JSON
{
  "study_type": "animal",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "8 h/day for 8 weeks"
  },
  "population": "Mice",
  "sample_size": null,
  "outcomes": [
    "Metabolic turnover of [14C]-N-nitrosodiethylamine (NDEA) into 14CO2 (percent of total radioactivity exhaled within 1 h)"
  ],
  "main_findings": "Mice exposed to a 50 Hz, 2 mT (rms) electromagnetic field (8 h/day) showed a significant increase in conversion of [14C]-NDEA to exhaled 14CO2 at 6 and 8 weeks of exposure (reported as 26.9% and 37.4%, respectively, vs 22.8% within 1 h after administration). The authors interpret the increased metabolism as potentially reducing the bioactive carcinogen burden.",
  "effect_direction": "benefit",
  "limitations": [
    "Sample size not reported in the abstract.",
    "Details of control/sham exposure conditions are not described in the abstract.",
    "Only a metabolic biomarker outcome is reported; no direct cancer or health endpoints are provided in the abstract.",
    "Statistical methods and variability measures are not provided in the abstract."
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "50 Hz",
    "ELF EMF",
    "2 mT",
    "mice",
    "N-nitrosodiethylamine",
    "NDEA",
    "14CO2 exhalation",
    "metabolism",
    "carcinogen"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.25,
      "reason": "Study involves relatively high-intensity 50 Hz magnetic field exposure (2 mT), relevant to occupational/industrial ELF exposure contexts."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1002/(sici)1521-186x(1999)20:1<1::aid-bem1>3.0.co;2-5
PubMed: 9915587

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